Home / 108,908.20-163,362.30-90,476.20

Finding the Fourth Proportional to 108,908.20, 163,362.30 and 90,476.20

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Solution

The fourth proportional to 108,908.20, 163,362.30 and 90,476.20 is: 135,714.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,908.20 : 163,362.30 = 90,476.20 : x
  2. Step 2: Convert to fraction form
    108,908.20/163,362.30 = 90,476.20/x
  3. Step 3: Cross multiply
    108,908.20x = 163,362.30 × 90,476.20
  4. Step 4: Simplify right side
    108,908.20x = 14,780,400,127.26
  5. Step 5: Solve for x
    x = 14,780,400,127.26/108,908.20
  6. Step 6: Final answer
    x = 135,714.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.